There's an important bit of metadata missing that would be useful to have.
Compare https://tools.wmflabs.org/import-500px/photo/18632929 with https://500px.com/photo/18632929/untitled-by-david-wilson
There's no description, but if you know the gallery name "Milton vs Woodstock 2012" it's much easier to grasp context.
This information was not provided on the json metadata I got from the ArchiveTeam. Looking at the live 500px site, it doesn't seem trivial to get this data for the more than 200k photos we have.
To improve manual access to this data I added a link on the popover title to the 500px photo detail page at @Darwinius suggestion.
Removing task assignee due to inactivity, as this open task has been assigned to the same person for more than two years (see the emails sent to the task assignee on Oct27 and Nov23). Please assign this task to yourself again if you still realistically [plan to] work on this task - it would be welcome.
(See https://www.mediawiki.org/wiki/Bug_management/Assignee_cleanup for tips how to best manage your individual work in Phabricator.)